31401033401 has 4 divisors (see below), whose sum is σ = 31401801600. Its totient is φ = 31400265204.

The previous prime is 31401033397. The next prime is 31401033427. The reversal of 31401033401 is 10433010413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31401033401 - 2² = 31401033397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31401033431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319121 + ... + 405758.

It is an arithmetic number, because the mean of its divisors is an integer number (7850450400).

Almost surely, 2^31401033401 is an apocalyptic number.

It is an amenable number.

31401033401 is a deficient number, since it is larger than the sum of its proper divisors (768199).

31401033401 is an equidigital number, since it uses as much as digits as its factorization.

31401033401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768198.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31401033401 its reverse (10433010413), we get a palindrome (41834043814).

The spelling of 31401033401 in words is "thirty-one billion, four hundred one million, thirty-three thousand, four hundred one".